* Full support of XPATH 1.0 according to https://www.w3.org/TR/xpath-10 using yacc/lex

* The previous XPATH imlementation was very restricted.
  * The only function implemented is the Yang extension "current()". No other functions are implemented (eg last(), count()).

test/lib.sh

@@ -39,7 +39,7 @@ err(){
   echo -e "\e[0m"
   echo "$ret"| od -t c > $dir/clixon-ret
   echo "$expect"| od -t c > $dir/clixon-expect
-  diff $dir/clixon-ret $dir/clixon-expect
+  diff $dir/clixon-expect $dir/clixon-ret 
 
   exit $testnr
 }